Recording and reproducing device for phonographs.



. D.H. WILSON.

RECORDING AND REPRODUGING DEVICE FOR PHONOGRAPHS.

APPLICATION FILED DEC. 29, 1904, I

1,048,924. Patented Dec. 31, 1912'.

rial.

DAVID E. WILSO Y, OF CHICAGO, ILLINOIS.

anconnme AND a'araonuome nnvrcn roe rnonoenarns Specification of Letters Patent. Patented Dec. 31, 1912.

application filedllecember 29, 1904..' Serial No. 238,740.

To all whom it may concern:

Be it known that I, DAVID H. WILSON, a citizen of the United States, residing at Chicage, in the county of Cook and State of Illinois, have invented a certain new'and useful Improvement in Recording and Reproducing Devices to1' Phonographs, of-

which the following is a specification like, and has for its object to prod-nee a new and improved device of this descriptioir which may be used v either as a recorderor'a reproducer.

My invention is illustrated in the accompanylng drawings, wherein- Figure 1 is a side view of a device embodying my invention; Fig. 2 is a sectional view of the device shown ln-Flg. 1.; Figs. 3, 4 and 5 show the parts of the device of Fig. 2 separated; Fig. 6 .is a sectional view showing a modified construction; Fig. '71s a view showing a further modification.

Like letters refer to like parts throughout the several figures. I 4

1n carrying out my invention I provide an outer shell or cylinder A, having an inwardly projecting part or flange A The diaphragm B oi. any suitable material is mounted in a diaphragm support B and is held in place byan adjustable holding piece 13 adjustably attached to the support B as, for example, by beingscrew threaded therein, said support having a flange B toward which the diaphragm is pressed. I prefer to provide washers l3v on each side of the diaphragm, as shown in Fig. 2, suchv washers to be of more or less elastic mate'- The reproducing or recording point is attached to the diaphragm in any desired manner. either as a .reproducer' or recorder these points musthe' removably attached to'the diaphragm so that one may be removed and the other attached as desired. This may be accomplished, for example, by fastening to the diaphragm a holding piece B adapted to receive a, removable piece B carrying the reproducing or recording point. In Fig. 2 I have shown a reproducing point B and \Vhen' the device is to be used in Fig. 6 a recordingpoint B The diacylinder A in any. desired manner, and is 'phragm support B is connected with the preferably supported upon the flange A by means of halls A?.= The. diaphragm support T madefsmaller ba l: the inside dimensions "of the cylinder so that it may be free to move 7 "insuch'cylinder, such support moving freely My invention relates to recording .-and-'-re-' producing devices for phonographs, andthc on the ball bearings. A holding piece C is screw threaded therein. When the device is to be used as a reproducer the holding piece is adjusted so as to\ leave the diaphragm audits support free so that the diaphragm is free to move in any direction to permit the reproducing point to follow the devious path required. It will be seen that by this means the point can move freely in. any direction, and that this movementoccurs Within the cylinder or casing A. It now it is desired to use the device as a recorder, the point must be stationary, and this result can be secured byscrewing down the holding piece C so as to engage the diaphragm support and hold it against movement. The reproducing point can then be removed, and the recording point attached, although a single pointmight be used for both purposes by having itproperly shaped. It will therefore be seen that the only thing necessary to change the device from a reproducer to a recorder, and, vice verse, is

the movement of the. holding pieceO to lease it The holding piece 0 is provided with an opening and a sleevelike part C to which is connected the tube C which leads to the ear or mouth of the person using the device,-.i

In Fig-6 ,I-havc shown a modified construction whereinballs C are interposed be tween the holding piece 0 and the diaphragm support. This holding piece C is also arranged in a diflerent manner. .In Fig. 2 the part of the holding piece Whichj engages the cylinder A projects in a direction opposite to that of the cylindrical part C In Fig. 6 both of these parts project in the same direction from the web 0*, and this Web is inclined, as shown. In other words, the engaging part, which engages the cylinder A, and the cylindrical part, through which the sound is conveyed, are connected by an inclined web. By supporting the diaphragm upon balls only a small contact is secured,

that is it is only supported at intervals, and

I. have described in detail a certain particular construction embodying my, invention, but it is of course evident that the parts may be varied in many particulars and some of the parts omitted and others used with parts not herein shown without departing from the spirit of my invention. 1, therefore, donot limit myself to the particular construction shown.

When the recording point is used it is often desirable to provide it with a stiifening device to prevent it from tipping. This stiffening device thus stiifens the diaphragm and relieves it of the tipping strain. I have shown one form of such device in Fig. 6, wherein D is a spring connected with the recording point at one end and attached at the other end to the diaphragm support, as by being inserted between one of the washers B and the rejecting part 13 It will be noted that thls spring makes no contact whatever with the diaphragm. The shell A is held in position in any desired manner, as, for example, by a clamp D provided with an arm 1) hinged to the support D by means of which the device is supported in proper position.

I claim:

1. A reproducing device for phonographs comprising an outer shell, a diaphragm associated therewith, a diaphragm support to which said diaphragm is connected, said diaphragm support movably mounted in said shell so as to be free to move laterally there being a free open space between the diaphragm support and the inner face of .said shell.

2. A combined reproducer and recorder for phonographs comprising an outer shell,

a diaphragm associated therewith, a diaphragm support to which said diaphragm is connected, said diaphragm support movably mounted in said-shell, and an adjustable holding piece extending entirely around masses the shell and adapted to be moved'so as to clamp the diaphragm support to prevent its lateral movement with relation to the shell.

3. A reproducing device for phonographs compnsmg an outer shell, a diaphragm associated therewith, a diaphragm support to which said diaphragm is connected, said diaphragm support movably mounted in said shell so as to be free to move laterally, and a series of balls upon which said diaphragm support is carried.

4:. A device for phonographs comprising a shell, a diaphragm having a point connected therewith, a support to which said diaphragm is connected, said diaphragm support smaller than the shell so as to be free to move therein, two series of balls, one on each side of said diaphragm support, and an adjustable holding piece associated with one series of balls.

5. A device for phonographs comprising a shell, a diaphragm having a point connected therewith, a diaphragm holder to which said diaphragm is connected and loosely mounted in said shell. and disconnected from the shell so as to be free to move laterally, an adjustable holding piece for said diaphragm support for limiting its movement.

6. A device for phonographs comprising a shelha diaphragm having a point connected therewith,

loosely mounted in said shell, an adjustable holding piece for said diaphragm support for limiting its movement, said holding piece. comprlsmg an engaging part which engages the shell and a cylindrical part connected thereto by an inclined web and projecting in the same direction therefrom. I

7. A device for phonographs comprising an outer shell, a diaphragm associated therewith, a diaphragm support to which said diaphragm is connected, said diaphragm support movably mounted in said shell, an

adjustable holding piece associated with the shell, and a series of balls between said adjustable holding piece and the diaphragm support. I

8. A device-for phonographs comprising an outer shell, a diaphragm provided with 'a point mounted in'said shell so as to be free to move laterally when the device is a diaphragm holder to which said diaphragm is connected and acting as a reproducer, and means for clamping the diaphragm to the shell when the device is acting asa recorder.

9. A reproducing device for phonographs comprising a diaphragm, an outer therefor, means for mounting the diaphragm in the shell so that it is free to move in the shell in a plane parallel to itself.

10. A reproducing graphs comprising an Outer shell, a diaphragm therein, balls above and below the shell device for phonocliaphragm and between which said diatering means, whereby the diaphragm and phragm is mounted so as to be free to move holding. part'are free to' move in a plane 10 laterally. parallel to the diaphragm.

11. A reproduoin device for ph0nographs, comprising a? diaphragm, a holding DAVID WILSON I part therefor, an outer shell containing the Witnesses: holding part, a free space between the hold- HOMER L. KRAFT, mg part and the-outer shell free from een- I LUCY A. FALKENBERG.

Copies of this patent may be obtained for five cents each, fey addressing the Gommtssionezof Patents,

Washington, D. G. 

